F I G U R E   1 8 .   R e c u r s i v e   D i v i s i o n   o f   a   N e t w o r k   P re f i x

In Figure 18, the 11.0.0.0/8 network is first configured with a /16

extended network prefix. The 11.1.0.0/16 subnet is then configured

with a /24 extended network prefix and the 11.253.0.0/16 subnet is

configured with a /19 extended network prefix. Note that the recursive

process does not require that the same extended network prefix be

assigned at each level of the recursion. Also, the recursive subdivision

of the organization's address space can be carried out as far as the net 

work administrator needs to take it. 

F I G U R E   1 9 .   R o u t e   A g g re g a t i o n ,   R e d u c i n g   R o u t i n g   Ta b l e

S i z e

U N D E R S TA N D I N G   I P   A D D R E S S I N G

2 2